While trying to learn how to build a removable lsm (which turned into learning how to build a removable driver), I 
noticed that each instance of nw_pthread_create() calls signal() to establish a signal handler for the signal dropped by
 the quiesce_callout().  But there is only one signal handler per process, so the last call to nw_pthread_create sets 
the signal handler for all the threads!  And the signal handler in ppp_tty.c uses wtp->wt_specialized in a much 
different manner than the signal handlers in qnet or drivertest.  So it appears that if both qnet and ppp are loaded, 
there are threads that will not be quiesced by quiese_all().  What am I missing here?

Murf